Portion of golf club head sole plate



FIG. 1 is a plan view of a portion of golf club head sole plate;

FIG. 2 is a rear view thereof;

FIG. 3 is a perspective view thereof; and,

FIG. 4 is a heel perspective thereof.

The broken line showing of the remainder of the club head is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of golf club head sole plate, as shown and described. 